Yorkshire; Ashgill Woods and Lamiilugh, Cumberland. Stronaclacban
AVoods and Beu Lawers, Perthshire ; Countesswells AA’oods, near Aberdeen;
Ballochbuie Forest, Braemar, Aberdeenshire; liothiemurchus
AA’oods, luverness-shire; Cawdor Woods, Kairu, Alorayshire.
A’ar. p. seahrosa Ach. Lich. Univ. (1810) p. 620.—Thallus
smaller, erect or suberect, subeæspitose, more or less fibrillose, papil-
loso-soabrid, vcrrucoso-sorodiato : otherwise as in the tyqre.—Cromb.
Jouru. Bot. 1882, p 2 7 2 .—Brit. E x s .: Aludd, n. 3 4 ; Leight. n. 1
pro p a rto ; Larb. Lioh. lib . n. 285.
AA’beii erect and fibiillose this is not unlike U. florida, from which it
differs iu tbe papillæ and prominent verrucose soredia, with whioh it is
more or less covered. I t is 3-5 inches iu length, and is rare!}' fertile,
though cephalodia are often present.
Ilab. On trunks and branches of trees, also on stunted shrubs and
rocks in maritime aud upland districts.—Distr. Bather local, though
plentiful where it occurs iu S., AV., and N. Kngland, N. AA’ales, 8. Scotland,
Ü7 - O -\\Y ri- i. JL___ ] T» Ar 1-1 T vs ’
Jivdford, 8, Devon; Gopsall, Leicestershire; Ilaughmond, Ilill, Shropshire
; near Dolgelly, Alerionethshire; Ayton Aloor, Cleveland, Yorkshire
; Calder xAbbey, Cumberland. New Galloway, Kirkcudbrightshire;
Appin, Argyleshire.
Form ferruginasceus Cromb. Traus. Essex Field Club, iv. (1885)
p. 60.—’Thallus erect, small, deep rusty-red. Apotheoia not seen.—
Usnea flo rid a f. rnUginea (non Alioh.), Gray, Nat. Arr. i. p. 403 ;
Cromb. Journ. Bot. 1870, p. 9 6 ; Leight. Lich. F l. p. 86, ed. 3,
p. 77.
Evidently an accidental condition, abnormally coloured by some kind
of maceration. The main branches are occasionally sparingly articulate
towards the base. I t is always sterile.
Hab. On trees and shrubs iu maritime aud upland tracts.—Distr.
Ilainault Forest, Essex ; Lydd, Kent ; 8t. Leonard’s Forest and Alaple-
hnrst, Sussex; New Forest, Hampshire; Falls of Beckey, S. Devon;
AA’ithiel, Cornwall. Near Belfast, co. Antrim.
6. U. articulata Hoffm. Deutsch. Fl. ii. (1795) p. 135.—’Thallus
pendulous, nearly smooth, flaccid, very muoh and dichotomously
branched, pale-greyish or pale-} ellowish ; branches elongate, a r ticulate
constricted, th e articulations ventricose, discrete ; branohlets
slender, fibrillose and entangled. Apothecia small, pale, somewhat
spai'ingly fibrilloso-oiliate.— Cromb. Journ. L in n . Soc. Bot. xvii.
p. 554.— Usnea harhata p. articulata Gray, Nat. Arr. i. p. 404 ;
Hook. F l. Soot. ii. p. 70 (e) ; Alndd, Alan. p. 69 ; Cromb. Lich. Brit,
p. 2 3 ; Leight. Lich. Fl. p. 85, ed. 3, p. 77. Lichen articulatus
Linn. Sp. PI. (1753) p. 1 1 5 6 ; Huds. Fl. Angl. p. 462 ; W’ith . Arr.
cd. 3, iv. p. 48, e t var. 2 harhatus; Eng. Bot. t. 258. f. 1. Usnea
harhata Sm. Eng. Fl. v. p. 231. Usnea capillacea nodosa Dill.
AIuso. 60, t. 11. f. 4. Lichenoides quod Muscus ai-horeus nodosus
Dill, in Ray, Syn. p. 65, n. 4.—B r it. E.vs. : Cromb. n. 17 ; Dicks.
Hort. Sic. n. 24.
Apparently a distinct species, easily recognized by tbe articulate tballus
and the long capillary fibrils of tbe lateral branches, 'fhe rest of the
thallus is sometimes nearly efibrillose, and the articulations, few or
many, are caused hy the transverse rupture of the cortical layer. In this
country the apothecia have never been met with, the supposed fruit of
the older writers being merely the “ cephalodia,” which are sometimes
very frequent aud occasionally conglomerate.
Hah. On the trunks of aged trees in old shady woods and forests in
upland districts.—Distr. Irecal and scarce at the present day in Great
Britain, though before our old woods and forests were so extensively
felled it seems to have been much more frequent,—B. AI. ; Charlton
Forest, Sussex; near Appuldurcomb and A’entnor, Isle of W ight; New
Forest, Ilauts ; near Exeter, Arton, Beckey Falls, Devonshire ; liskeard,
Cornwall; Enfield Chace, Hertfordsliire ; near Stockenchurch, Oxford ;
Cwm Bychan, near Barmouth, Alerionethshire ; Burnley, Lancashire.
Strouaclachan AA’oods, Killin, Perthshire; Deerhill AA’oods, Forfarshire ;
Rothiemurchus A\’’oods, Inverness-shire.
Form intestiniformis Cromb. Grevillea, xv. (1886) p. 48.—
Thallus prostrate, thick, and inflated, here and there coarctate and
ventricose ; branchlets sliort, attenuate, flexuoso-interwoven.—
Usnea harhata d. intestiniformis xAch. Lioh. Univ. (1810) jj. 625.
Usnea harhata p . articidata Sm. Eng. F l. v. ji. 231. Usnea articulata
Tayl. iu Alack. Fl. Hib. ii. p. 86.
This singular state, evidently depending on the habitat, difiei's in the
articulations being very much swollen and the branchlets much shorter.
I t is always infertile.
Hab. On the ground in sandy tracts in maritime districts.—Distr.
Local and scarce in 8.AV. England and S.E. Ireland ; not recently
gathered.—B. AI. : Exmouth W’arren, Devonshire. Alalahide, uear
Dublin.
Tribe X I. ALECTORIEI Nyl. Flo ra 1869, p. 444.
Thallus fruticulose, rounded or compressed, erect or pendulous,
decumbent or qirostrate, in ternally tvith lax, arachuoid medulla, or
entirely hollow. Apothecia leoanorine, scutelliform, la te ra l or
pseudo-terminal; spores usually Snae, small or moderate, simple,
colourless ; paraphyses no t discrete. Spermogones immersed or
superficial ; sterigmata pauci-articulate.
As instituted by Nylander this is a well-defined and natural tribe. I t
is allied to the preceding and following tribes. Of its three genera, Du-
f aurea aud Dactylina do not occur in our Islands.